To the best of authors' knowledge, [1]} performed the first study of a stratified flow past a slender body that investigates the near and intermediate wake dynamics. Their analyses reveal that at \(\mbox{\textit {Fr}}\sim O(1)\)  the type of separation and the subsequent wake establishment is strongly dependent on the characteristic frequency of the lee waves and the aspect ratio of the body. When half the wavelength of the steady lee waves (\(\lambda =2\pi \mbox{\textit {Fr}}\) ) matches the length of the slender body (\(L\) ), the separation of the boundary layer is inhibited by buoyancy effects. Based on this condition, a critical Froude number can be defined \(\mbox{\textit {Fr}}_c=L/D\pi \) . When \(\mbox{\textit {Fr}}>\mbox{\textit {Fr}}_c\)  stratification suppresses the generation of turbulence in the near wake, when \(\mbox{\textit {Fr}}\approx \mbox{\textit {Fr}}_c\)  buoyancy strongly limits the flow separation and can lead to a relaminarization of the wake at low Reynolds numbers. Finally, when \(\mbox{\textit {Fr}}<\mbox{\textit {Fr}}_c\) , the lee waves enlarge the separation region and there might be an increase in the turbulence intensities in the wake. When \(\mbox{\textit {Fr}}\approx \mbox{\textit {Fr}}_c\)  the wake is in a resonant state with both the separation and the wake dimensions being strongly modulated by the steady lee waves [2]}, [3]}, [1]}.
